AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
AMPLIFIER
W3 VOICE COILS IN SERIES:
W3 VOICE COILS IN PARALLEL:
W3-D4: 8.0
Ω
W3-D2: 4.0
Ω
W3-D4: 4.0
Ω
W3-D2: 2.0
Ω
W3-D4: 2.7
Ω
W3-D2: 1.3
Ω
W3-D4: 2.0
Ω
W3-D2: 1.0
Ω
W3-D4: 1.0
Ω
W3-D2: 0.5
Ω
W3-D4: 0.7
Ω
W3-D2: 0.3
Ω
2
JL AUDIO
15W3/18W3
SUBWOOFER:
15W3-D2
15W3-D4
18W3-D2
18W3-D4
Free Air Resonance (Fs):
21.3 Hz
21.8 Hz
19.0 Hz
19.7 Hz
Electrical “Q” (Qes):
0.4559
0.4302
0.4079
0.456
Mechanical “Q” (Qms):
8.854
8.854
8.7578
8.0183
Total Speaker “Q” (Qts):
0.434
0.41
0.39
0.432
Equiv. Compliance (Vas):
8.42 ft
3
8.42 ft
3
13.339 ft
3
13.339 ft
3
238.5 litres
238.5 litres
377.1 litres
377.1 litres
One-way, Linear Excursion:
0.675 in
0.675 in
0.500 in
0.500 in
(Xmax)*
17.1 mm
17.1 mm
12.7 mm
12.7 mm
Efficiency (1W/1m)**:
88.8 dB
89.4 dB
89.8 dB
89.8 dB
Effective Piston Area (Sd):
127.5 in
2
127.5 in
2
186.1 in
2
186.1 in
2
0.0823 m
2
0.0823 m
2
0.12009 m
2
0.12009 m
2
DC Resistance (Re)***:
3.34
Ω
6.66
Ω
3.36
Ω
6.54
Ω
Nominal Impedance:
Dual 2
Ω
Dual 4
Ω
Dual 2
Ω
Dual 4
Ω
Power Handling (continuous):
400W
400W
500W
500W
Mounting Depth:
8.125 in
8.125 in
9.0625 in
9.0625 in
206 mm
206 mm
230 mm
230 mm
Mounting Hole Diameter:
13.875 in
13.875 in
16.5 in
16.5 in
352 mm
352 mm
419 mm
419 mm
Driver Displacement:
0.140 ft
3
0.140 ft
3
0.20 ft
3
0.20 ft
3
3.9 litres
3.9 litres
5.6 litres
5.6 litres
*Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied. **Efficiency (1W/1m) is not an accurate indicator of
a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is “louder”. ***Re (DC resistance) is measured with
the voice coils in series, for parallel-wired specification divide Re by 4. All other specifications remain the same.
SUBWOOFER SPECIFICATIONS
WIRING OPTIONS
